Asymmetric Mannich reaction catalyzed by N-arylsulfonyl-l-proline amides
摘要:
Proline-derived N-sulfonylcarboxamides efficiently catalyze the asymmetric Mannich reaction of cyclic ketones with N-(p-methoxyphenyl)-protected iminoglyoxylate. Both classical organic solvents and ionic liquids were used as the reaction media. With cyclohexanone, the reaction proceeded with high enantioselectivity (99% ee). Enamine intermediates were investigated by DFT Calculations (c) 2009 Elsevier Ltd All rights reserved
Asymmetric Mannich reaction catalyzed by N-arylsulfonyl-l-proline amides
摘要:
Proline-derived N-sulfonylcarboxamides efficiently catalyze the asymmetric Mannich reaction of cyclic ketones with N-(p-methoxyphenyl)-protected iminoglyoxylate. Both classical organic solvents and ionic liquids were used as the reaction media. With cyclohexanone, the reaction proceeded with high enantioselectivity (99% ee). Enamine intermediates were investigated by DFT Calculations (c) 2009 Elsevier Ltd All rights reserved